Birds

Scarlet ibis

Eudocimus ruber

The scarlet ibis is a fiery red bird of tropical South American coasts, one of the most vividly coloured birds in the world.

Characteristics

Scientific nameEudocimus ruber
SizeAbout 55–63 cm long
Energy2/5

Temperament

Gregarious and social; lives and nests in large flocks.

Diet

Carnivorous: crustaceans, molluscs, aquatic insects and small fish.

A bird of fiery red

The scarlet ibis (Eudocimus ruber) is one of the most spectacular birds on the planet, unmistakable for its brilliant scarlet plumage, with only the wingtips tinged black. In form it resembles other ibises — a slender body, long legs and the characteristic long, downcurved bill — but its colour sets it apart from every other species. The young, by contrast, hatch grey and brown, taking on the red plumage only as they mature.

Habitat and range

It lives along the tropical coasts of northern South America and on the Caribbean islands, frequenting mangroves, estuaries, lagoons and coastal marshes. It moves in large flocks and nests in noisy colonies in trees, often alongside other wading birds.

Behaviour and diet

It feeds by probing its curved bill into mud and shallow water in search of crustaceans, molluscs, aquatic insects and small fish. The crustacean-rich diet is the source of its colour: the carotenoid pigments in shrimp accumulate in its feathers, turning them red. In captivity, without this diet, the colour fades towards pink or orange.

Did you know?

It is one of the two national birds of Trinidad and Tobago and appears on its coat of arms. Its Tupi–Guarani name, guará, has become part of the names of several coastal places in Brazil.

Conservation

The IUCN lists it as Least Concern. It is still widespread, but mangrove destruction, poaching and the collection of eggs and chicks are local pressures in some areas.

Pros

  • Unmistakable brilliant scarlet plumage
  • National bird of Trinidad and Tobago
  • Least Concern, still widespread

Cons

  • Depends on mangroves and wetlands
  • Colour fades without its natural diet
  • Poaching and egg collection in some areas

FAQ

Why is the scarlet ibis so red?
Its colour comes from the carotenoid pigments in the crustaceans it eats, such as shrimp. These pigments build up in its feathers; without that diet, in captivity, the red fades.
Are the chicks red like the adults?
No, they hatch grey and brown. They gain the scarlet plumage gradually as they grow, as their diet becomes richer in crustaceans.
Where does it live?
Along the tropical coasts of northern South America and in the Caribbean, among mangroves, estuaries, lagoons and coastal marshes, where it moves in large flocks.

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